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Hello.My car is supercharged LT-1 377 ci with Procharger D1-SC Approximate power must be about 550 - 600 hp .I used hooker competition headers HOK-2061HKR from Summit.There is now catalitic converters in my system .I cut it .All other parts of exhaust ar stock.What do you think ,If I ll change exhaust to bigger tube size ,it will be better ?
Hello.My car is supercharged LT-1 377 ci with Procharger D1-SC.
Approximate power must be about 550 - 600 hp. I used Hooker
Competition headers HOK-2061HKR from Summit. There are no catalytic
converters in my system. I cut it. All other parts of exhaust are stock.
What do you think, if I change exhaust to bigger tube size, will it be
better?
My vote is that increasing the capacity of the exhaust
system will help your engine combination produce more power.
To test, you might try measuring back pressure in the existing
system. If there turns out to be more than 2-3" HG under load,
this would suggest that changes will help.
The Corsa system is well regarded because it does not
drone the way that other systems can. There is a Group Buy
available now that may make the system even more attractive.
While the Corsa is 2-1/2", read the following comment from the thread above
Originally Posted by FU
FWIW....My 556 RWHP 91 had a 3" B&B system with the resonator on.
Went to a Corsa system for my sanity and experienced NO loss of
H/P. The exchange was recommended by a very experienced tuner. I
was shocked and very happy with the results.
alx, just curious. What bore and stroke are you using to get 377ci?
Not sure if it's how he did it, but a 400 SBC crank (3.75" stroke) in a 350 block with standard bore yields 377ci. The only other way would be a huge overbore.
My engine have stock bore & 3.75 crank.I am from Russia.
Привет.Дану не ставил еще .Жду кит для переборки кпп.Потом все вместе.
I didnt install Dana 44.I ll do it after rebuilding transmission.
Another way to get a 377 is to drop a 350 crank in a 400 block. You may need bearing spacers as Im pretty sure the main sizes are different ..There may be custom cranks out that eliminate the need for them but I havent checked in ages. Big bore, short stroke.
Привет.Дану не ставил еще .Жду кит для переборки кпп.Потом все вместе.